Malicious PDF — malware analysis report

Static analysis result for SHA-256 7896dcd2b6de25d5…

MALICIOUS

PDF

41.4 KB Created: 2020-09-10 09:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d6e18c81d4d93e0a70b68807d989ce3 SHA-1: 5a7a5a44a0f45752293a8ef847fbc259d73227ac SHA-256: 7896dcd2b6de25d5f79b70e43af2c114fc7408b841c691aebace520890f45cf1
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links designed to redirect users to external websites, with at least one URL identified as a malicious redirector. The document body, though heavily obfuscated, contains a reference to the same keyword found in the malicious URL, suggesting a coordinated effort to lure users. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of a link farm pointing to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/wix?keyword=primary+characteristics+of+useful+accounting+information In PDF document text
    • http://gufiwa.ascendthroughsound.com/uploads/1/3/1/0/131070450/7396367.pdfIn PDF document text
    • http://zunusezal.aliveballetacademy.com/uploads/1/3/0/8/130873951/3968961.pdfIn PDF document text
    • http://konebazig.kavachikavachi.com/uploads/1/3/1/4/131454143/9f5d0c4124a.pdfIn PDF document text
    • http://files.rebeccameidinger.com/uploads/1/3/1/4/131437249/f7f1bab8.pdfIn PDF document text
    • http://files.30westfitandrec.com/uploads/1/3/0/7/130775784/potokosupejexu.pdfIn PDF document text
    • http://xavoxatif.sigmapivu.com/uploads/1/3/1/0/131070420/jexixe-dugalopawo-xabewa-mulegom.pdfIn PDF document text
    • http://goforipiz.smhsclassof66.org/uploads/1/3/2/6/132681072/9574049.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5528/3350/files/jozubafufinosepokosetapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2417/0659/files/rising_of_the_shield_hero_season_2_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/network_science_albert-_lszl_barabsi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7085/7122/files/johnson_county_housing_authority.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/7927/0299/files/droop_crossword_answer.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6303 5400 bytes
SHA-256: 02e7d8dd32804bc7c512594d76105a58506795b7fbe1fb0fd9a937df8b94d0fb
font_01_sfnt_off0000753c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753C 10276 bytes
SHA-256: e11e60584c03ee71ebf6df9dc119cc43fbb2d45c46523c92feab27fcd8b7f780

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